public static void Run([TimerTrigger("0 */5 * * * *")] TimerInfo myTimer, ILogger log)
{
var tenantId = "1dc1085b-9aa9-42dc-bedd-4c7dcfe4570e";
var clientSecret = "Code@Gen2018";
var clientId = "c56cd20f-df34-4ab6-8c3d-bc90547d2838";
var clusterId = "/subscriptions/f6fec764-fbe4-42a9-8f27-93cfe2f839cd/resourcegroups/CodeGen2018/providers/Microsoft.ContainerService/managedClusters/CodeGen";
var url = "https://codegenaks-31b27eec.hcp.northeurope.azmk8s.io:443/api/v1/namespaces/kube-system/services/http:heapster:/proxy/apis/metrics/v1alpha1/nodes?labelSelector=";
var token = "701c47b9b820885ffa01f2727829d57a";
double averageUsage;
var handler = new HttpClientHandler {
ServerCertificateCustomValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true
};
using (var client = new HttpClient(handler))
{
log.LogInformation($"Querying Cluster Metrics...");
client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", $"Bearer {token}");
var response = client.GetStringAsync(url).GetAwaiter().GetResult();
var typedMetric = JsonConvert.DeserializeObject <K8sMetric>(response);
averageUsage = Math.Round(typedMetric.Items.Average(x => x.Usage.CPUUsage), 0);
}
log.LogInformation($"Average CPU usage is {averageUsage}");
var credentials = SdkContext.AzureCredentialsFactory.FromServicePrincipal(clientId, clientSecret, tenantId, AzureEnvironment.AzureGlobalCloud);
var azure = Azure.Configure().Authenticate(credentials).WithDefaultSubscription();
IKubernetesCluster kubernetesCluster = azure.KubernetesClusters.GetById(clusterId);
var agentPool = kubernetesCluster.AgentPools.FirstOrDefault().Value as IKubernetesClusterAgentPool;
var nodeCount = agentPool.Count;
log.LogInformation($"Current node count is {nodeCount}");
if (!kubernetesCluster.ProvisioningState.Equals("Succeeded"))
{
log.LogInformation($"Cluster level operation in progress. State: {kubernetesCluster.ProvisioningState}");
return;
}
if (averageUsage >= 50)
{
nodeCount += 1;
log.LogInformation($"Scaling up by 1 VM");
kubernetesCluster.Update().WithAgentPoolVirtualMachineCount(nodeCount).Apply();
}
else if (averageUsage < 50 && nodeCount > 3)
{
nodeCount -= 1;
log.LogInformation($"Scaling down by 1 VM");
kubernetesCluster.Update().WithAgentPoolVirtualMachineCount(nodeCount).Apply();
}
log.LogInformation($"Autoscaling ended...");
}
public void KubernetesClusterCRUDTest()
{
using (var context = FluentMockContext.Start(GetType().FullName))
{
var aksName = TestUtilities.GenerateName("aks");
var dnsPrefix = "dns" + aksName;
var rgName = "rg" + aksName;
var agentPoolName = "ap0" + aksName;
var networkName = "net" + aksName;
var agentPoolSubnetName = "agentsub" + networkName;
var virtualNodeSubnetName = "virtualNodesub" + networkName;
IKubernetesCluster kubernetesCluster = null;
var containerServiceManager = TestHelper.CreateContainerServiceManager();
var resourceManager = TestHelper.CreateResourceManager();
var networkManager = TestHelper.CreateNetworkManager();
try
{
string envSecondaryServicePrincipal = Environment.GetEnvironmentVariable("AZURE_AUTH_LOCATION_2");
if (String.IsNullOrWhiteSpace(envSecondaryServicePrincipal) || !File.Exists(envSecondaryServicePrincipal))
{
envSecondaryServicePrincipal = Environment.GetEnvironmentVariable("AZURE_AUTH_LOCATION");
}
string servicePrincipalClientId = GetSecondaryServicePrincipalClientID(envSecondaryServicePrincipal);
string servicePrincipalSecret = GetSecondaryServicePrincipalSecret(envSecondaryServicePrincipal);
var network = networkManager.Networks.Define(networkName)
.WithRegion(Region.USCentral)
.WithNewResourceGroup(rgName)
.WithAddressSpace("10.100.0.0/16")
.DefineSubnet(agentPoolSubnetName)
.WithAddressPrefix("10.100.0.0/24")
.Attach()
.DefineSubnet(virtualNodeSubnetName)
.WithAddressPrefix("10.100.1.0/24")
.Attach()
.Create();
kubernetesCluster = containerServiceManager.KubernetesClusters.Define(aksName)
.WithRegion(Region.USCentral)
.WithNewResourceGroup(rgName)
.WithLatestVersion()
.WithRootUsername("testaks")
.WithSshKey(SshKey)
.WithServicePrincipalClientId(servicePrincipalClientId)
.WithServicePrincipalSecret(servicePrincipalSecret)
.DefineAgentPool(agentPoolName)
.WithVirtualMachineSize(ContainerServiceVMSizeTypes.StandardD2V2)
.WithAgentPoolVirtualMachineCount(1)
.WithAgentPoolType(AgentPoolType.VirtualMachineScaleSets)
.WithAgentPoolMode(AgentPoolMode.System)
.WithVirtualNetwork(network.Id, agentPoolSubnetName)
.Attach()
.WithDnsPrefix("mp1" + dnsPrefix)
.WithVirtualNode(virtualNodeSubnetName)
.DefineNetworkProfile
.WithNetworkPlugin(NetworkPlugin.Azure)
.Attach()
.WithTag("tag1", "value1")
.Create();
Assert.NotNull(kubernetesCluster.Id);
Assert.Equal(Region.USCentral, kubernetesCluster.Region);
Assert.Equal("testaks", kubernetesCluster.LinuxRootUsername);
Assert.Equal(1, kubernetesCluster.AgentPools.Count);
Assert.NotNull(kubernetesCluster.AgentPools[agentPoolName]);
Assert.Equal(1, kubernetesCluster.AgentPools[agentPoolName].Count);
Assert.Equal(ContainerServiceVMSizeTypes.StandardD2V2, kubernetesCluster.AgentPools[agentPoolName].VMSize);
Assert.Equal(AgentPoolType.VirtualMachineScaleSets, kubernetesCluster.AgentPools[agentPoolName].Type);
Assert.NotNull(kubernetesCluster.Tags["tag1"]);
kubernetesCluster = containerServiceManager.KubernetesClusters.GetByResourceGroup(rgName, aksName);
// Updates resource
kubernetesCluster = kubernetesCluster.Update()
.WithAgentPoolVirtualMachineCount(agentPoolName, 5)
.WithTag("tag2", "value2")
.WithTag("tag3", "value3")
.WithoutTag("tag1")
.Apply();
Assert.Equal(1, kubernetesCluster.AgentPools.Count);
Assert.Equal(5, kubernetesCluster.AgentPools[agentPoolName].Count);
Assert.NotNull(kubernetesCluster.Tags["tag2"]);
Assert.True(!kubernetesCluster.Tags.ContainsKey("tag1"));
}
finally
{
try
{
resourceManager.ResourceGroups.BeginDeleteByName(rgName);
}
catch { }
}
}
}
public void KubernetesClusterCRUDTest()
{
using (var context = FluentMockContext.Start(GetType().FullName))
{
var aksName = TestUtilities.GenerateName("aks");
var dnsPrefix = "dns" + aksName;
var rgName = "rg" + aksName;
var agentPoolName = "ap0" + aksName;
IKubernetesCluster kubernetesCluster = null;
var containerServiceManager = TestHelper.CreateContainerServiceManager();
var resourceManager = TestHelper.CreateResourceManager();
try
{
kubernetesCluster = containerServiceManager.KubernetesClusters.Define(aksName)
.WithRegion(Region.USCentral)
.WithNewResourceGroup(rgName)
.WithLatestVersion()
.WithRootUsername("testaks")
.WithSshKey(SshKey)
.WithServicePrincipalClientId("spId")
.WithServicePrincipalSecret("spSecret")
.DefineAgentPool(agentPoolName)
.WithVirtualMachineCount(1)
.WithVirtualMachineSize(ContainerServiceVirtualMachineSizeTypes.StandardD1V2)
.Attach()
.WithDnsPrefix("mp1" + dnsPrefix)
.WithTag("tag1", "value1")
.Create();
Assert.NotNull(kubernetesCluster.Id);
Assert.Equal(Region.USCentral, kubernetesCluster.Region);
Assert.Equal("testaks", kubernetesCluster.LinuxRootUsername);
Assert.Equal(1, kubernetesCluster.AgentPools.Count);
Assert.NotNull(kubernetesCluster.AgentPools[agentPoolName]);
Assert.Equal(1, kubernetesCluster.AgentPools[agentPoolName].Count);
Assert.Equal(ContainerServiceVirtualMachineSizeTypes.StandardD1V2, kubernetesCluster.AgentPools[agentPoolName].VMSize);
Assert.NotNull(kubernetesCluster.Tags["tag1"]);
kubernetesCluster = containerServiceManager.KubernetesClusters.GetByResourceGroup(rgName, aksName);
// Updates resource
kubernetesCluster = kubernetesCluster.Update()
.WithAgentVirtualMachineCount(agentPoolName, 5)
.WithTag("tag2", "value2")
.WithTag("tag3", "value3")
.WithoutTag("tag1")
.Apply();
Assert.Equal(1, kubernetesCluster.AgentPools.Count);
Assert.Equal(5, kubernetesCluster.AgentPools[agentPoolName].Count);
Assert.NotNull(kubernetesCluster.Tags["tag2"]);
Assert.True(!kubernetesCluster.Tags.ContainsKey("tag1"));
}
finally
{
try
{
resourceManager.ResourceGroups.BeginDeleteByName(rgName);
}
catch { }
}
}
}
/**
* An Azure Container Services sample for managing a Kubernetes cluster.
* - Create a Kubernetes cluster
* - Update the number of agent virtual machines in an Azure Container Service
*/
public static void RunSample(IAzure azure, string clientId, string secret)
{
string rgName = SdkContext.RandomResourceName("rgaks", 15);
string aksName = SdkContext.RandomResourceName("akssample", 30);
Region region = Region.USCentral;
string rootUserName = "******";
string sshPublicKey = // replace with a real SSH public key
"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyhPdNuJUmTeLsaZL83vARuSVlN5qbKs7j"
+ "Cm723fqH85rIRQHgwEUXJbENEgZT0cXEgz4h36bQLMYT3/30fRnxYl8U6gRn27zFiMwaDstOjc9EofStODbiHx9A"
+ "Y1XYStjegdf+LNa5tmRv8dZEdj47XDxosSG3JKHpSuf0fXr4u7NjgAxdYOxyMSPAEcfXQctA+ybHkGDLdjLHT7q5C"
+ "4RXlQT7S9v5z532C3KuUSQW7n3QBP3xw/bC8aKcJafwZUYjYnw7owkBnv4TsZVva2le7maYkrtLH6w+XbhfHY4WwK"
+ "Y2Xxl1TxSGkb8tDsa6XgTmGfAKcDpnIe0DASJD8wFF [email protected]";
string servicePrincipalClientId = clientId; // replace with a real service principal client id
string servicePrincipalSecret = secret; // and corresponding secret
try
{
//=============================================================
// ...
//=============================================================
// If service principal client id and secret are not set via the local variables, attempt to read the service
// principal client id and secret from a secondary ".azureauth" file set through an environment variable.
//
// If the environment variable was not set then reuse the main service principal set for running this sample.
if (String.IsNullOrWhiteSpace(servicePrincipalClientId) || String.IsNullOrWhiteSpace(servicePrincipalSecret))
{
string envSecondaryServicePrincipal = Environment.GetEnvironmentVariable("AZURE_AUTH_LOCATION_2");
if (String.IsNullOrWhiteSpace(envSecondaryServicePrincipal) || !File.Exists(envSecondaryServicePrincipal))
{
envSecondaryServicePrincipal = Environment.GetEnvironmentVariable("AZURE_AUTH_LOCATION");
}
servicePrincipalClientId = Utilities.GetSecondaryServicePrincipalClientID(envSecondaryServicePrincipal);
servicePrincipalSecret = Utilities.GetSecondaryServicePrincipalSecret(envSecondaryServicePrincipal);
}
//=============================================================
// Create a Kubernetes cluster
Utilities.Log("Creating a Kubernetes cluster with one agent and one virtual machine");
IKubernetesCluster kubernetesCluster = azure.KubernetesClusters.Define(aksName)
.WithRegion(region)
.WithNewResourceGroup(rgName)
.WithLatestVersion()
.WithRootUsername(rootUserName)
.WithSshKey(sshPublicKey)
.WithServicePrincipalClientId(servicePrincipalClientId)
.WithServicePrincipalSecret(servicePrincipalSecret)
.DefineAgentPool("ap")
.WithVirtualMachineSize(ContainerServiceVirtualMachineSizeTypes.StandardD1V2)
.WithAgentPoolVirtualMachineCount(1)
.Attach()
.WithDnsPrefix("dns-" + aksName)
.Create();
Utilities.Log("Created Kubernetes cluster: " + kubernetesCluster.Id);
Utilities.Print(kubernetesCluster);
//=============================================================
// Updates a Kubernetes cluster agent with two virtual machines
Utilities.Log("Updating the Kubernetes cluster agent with two virtual machines");
kubernetesCluster.Update()
.WithAgentPoolVirtualMachineCount(2)
.Apply();
Utilities.Log("Updated Kubernetes cluster: " + kubernetesCluster.Id);
Utilities.Print(kubernetesCluster);
}
finally
{
try
{
Utilities.Log("Deleting Resource Group: " + rgName);
azure.ResourceGroups.BeginDeleteByName(rgName);
Utilities.Log("Deleted Resource Group: " + rgName);
}
catch (NullReferenceException)
{
Utilities.Log("Did not create any resources in Azure. No clean up is necessary");
}
catch (Exception g)
{
Utilities.Log(g);
}
}
}
static async Task AsyncMain(string[] args)
{
var credentials = SdkContext.AzureCredentialsFactory.FromFile("../../Credentials/authfile.json");
var azure = Azure
.Configure()
.WithLogLevel(HttpLoggingDelegatingHandler.Level.Basic)
.Authenticate(credentials)
.WithDefaultSubscription();
Console.WriteLine("Your subscription ID: \r\n" + azure.SubscriptionId);
Console.WriteLine("Creating an AKS Cluster!");
String rootUser = azureConfig.GetValue("RootUser").ToString();
String rgName = azureConfig.GetValue("ResourceGroup").ToString();
String aksName = azureConfig.GetValue("ClusterName").ToString();
String location = azureConfig.GetValue("Location").ToString();
String sshPublicKey = azureConfig.GetValue("SshPublicKey").ToString();
String clientSecret = JObject.Parse(File.ReadAllText("../../Credentials/authfile.json")).GetValue("clientSecret").ToString();
try {
Console.WriteLine("Trying to create the cluster...");
IKubernetesCluster cluster = await azure.KubernetesClusters.Define(aksName)
.WithRegion(location)
.WithNewResourceGroup(rgName)
.WithLatestVersion()
.WithRootUsername(rootUser)
.WithSshKey(sshPublicKey)
.WithServicePrincipalClientId(credentials.ClientId)
.WithServicePrincipalSecret(clientSecret)
.DefineAgentPool("agentpool")
.WithVirtualMachineSize(ContainerServiceVMSizeTypes.StandardA2)
.WithAgentPoolVirtualMachineCount(2)
.Attach()
.WithDnsPrefix("dns-" + aksName)
.CreateAsync();
Console.WriteLine("Created Kubernetes Cluster: " + cluster.Id);
Console.WriteLine(cluster);
Console.WriteLine("Updating Kubernetes Cluster. More VMs!!: " + cluster.Id);
await cluster.Update()
.WithAgentPoolVirtualMachineCount(4)
.ApplyAsync();
Console.WriteLine("Updated Kubernetes Cluster: " + cluster.Id);
Console.WriteLine(cluster);
} catch (Exception g)
{
Console.WriteLine(g);
}
finally {
try
{
Console.WriteLine("Deleting Resource Group: " + rgName);
await azure.ResourceGroups.BeginDeleteByNameAsync(rgName);
Console.WriteLine("Deleted Resource Group: " + rgName);
}
catch (NullReferenceException)
{
Console.WriteLine("Did not create any resources in Azure. No clean up is necessary");
}
catch (Exception g)
{
Console.WriteLine(g);
}
}
}